Apparatus for driving an elongated member through a base and bending an end portion of a projecting part of the elongated member



May 14, A. E. BOYER APPARATUS FOR DRIVING AN ELONGATED MEMBER THROUGH A BASE AND BENDING AN END PORTION OF A PROJECTING PART OF THE ELONGATED MEMBER Filed May 20, 1966 5 Sheets-Sheet 1 INVENTOR. 1.25. Jaye May 14, 1968 A. E. BOYER 3,383,021

APPARATUS FOR DRIVING AN ELONGATED MEMBER THROUGH A BASE AND BENDING AN END PORTION OF A PROJECTING PART OF THE ELONGATED MEMBER Sheets-Sheet 5 A. E. BOYER PART OF THE ELONGATED MEMBER May 14, 1968 APPARATUS FOR DRIVING AN ELONGATED MEMBER THROUGH A BASE AND BENDING AN END PORTION OF A PROJECTING Filed May 20, 1966 May 14, 1968 A. E. BOYER 3,383,021 APPARATUS FOR DRIVING AN ELONGATED MEMBER THROUGH A BASE AND BENDING AN END PORTION OF A PROJECTING PART OF THE ELONGATED MEMBER Filed May 20, 1966 5 Sheets-Sheet 4 May 14, 1968 A. E. BOYER 3,383,021

APPARATUS FOR DRIVING AN ELONGATED MEMBER THROUGH A BASE AND BENDING AN END PORTION OF A PROJECTING PART OF THE ELONGATED MEMBER Filed May 20, 1966 5 Sheets-Sheet T:

United States Patent 3,383,021 APPARATUS FOR DRIVING AN ELONGATED MEMBER THROUGH A BASE AND BENDING AN END PORTION OF A PROJECTING PART OF THE ELONGATED MEMBER Albert E. Boyer, Peabody, Mass., assignor to Western Electric Company, Incorporated, New York, N.Y., a corporation of New York Filed May 20, 1966, Ser. No. 551,767 8 Claims. (Cl. 227-77) ABSTRACT OF THE DISCLOSURE Inserting and bending apparatus drives elongated terminal members into preformed holes in a base member to project therethrough, and then bends projecting ends of the terminal members outwardly from the center of the base member. After insertion, bending occurs as projections on bending blades move the ends of the terminal members outwardly and upwardly across anvil lugs on backing blades to form bends of over ninety degrees in the terminal members. Then, the bending and backing blades are withdrawn outwardly, allowing finished articles to fall freely from the apparatus.

This invention relates to apparatus for driving an elongated member through a base and then bending an end porton of a projecting part of the elongated member, and more particularly to apparatus of the aforementioned type having a bending mechanism and a backing mechanism which are mounted on separate movable supports that are first moved relative to one another to bend an end portion of the projecting part and are thereafter both displaced to permit easy removal of the finished piece.

In inserting an elongated member, such as a terminal, into a base, such as a terminal block assembly, and then bending an end portion of a part of the elongated member projecting therethrough, it is desirable to provide a single apparatus which will perform these functions and which will permit the finished piece to be easily removed. Further, it is often desired to simultaneously bend two or more groups of terminals in opposite directions. Bending of a plurality of terminal members at locations in diiferent tiers may also be necessary. All bending members and backing members should be fully withdrawn from the piece, with the mechanisms for accomplishing this result having as little complexity as possible.

Also, the elongated member to be bent often is made of a material displaying a tendency to return after bending to a configuration intermediate the configuration to which the apparatus bends it and its unbent configuration, that is, to an angle of bend less than the angle to which it is bent by the apparatus. Where a right angle bend is required, therefore, it is desirable to provide apparatus wherein the elongated member is bent to an angle greater than a right angle. Obviously, such feature is also useful where a final bend of greater than a right angle is desired.

It is an object of the invention to provide an apparatus for driving an elongated member through a base and bending an end portion of a projecting part of the elongated member.

t is another object of the invention to provide in such apparatus new and improved facilities for simultaneously bending groups of terminals in opposite directions which permits subsequent easy removal of a finished piece.

It is a further object of the invention to provide facilities in such apparatus for bending of the end portions "ice of elongated members in each group so that the members are located in different tiers.

An additional object of the invention resides in bending terminals projecting from a block by initially moving elements against the terminals and then transverse to the directions of the initial movement to impart bends of greater than ninety degrees.

With these and other objects in view, the invention contemplates the use in the aforementioned type of apparatus of a driving mechanism, a bending mechanism and a backing mechanism, the bending and backing mechanisms being mounted on separate movable supports which are first moved relative to one another to perform the bending operation on a projecting part of a driven elongated member or members and are thereafter both displaced to permit easy removal of the finished piece. More particularly, the driving mechanism drives elongated members through a base to cause parts of the members to project therethrough. The end portions of the projecting parts are to be bent. In the bending operation, two groups of bending blades are first moved across stationary backing blades'to bend the end portions of the projecting parts in opposite directions across the backing blades. After the bending blades are moved across the backing blades, further movements of the bending blades toward the backing blades in a direction perpendicular to their initial directions of movement permits bending of each member at an angle greater than a right angle. Then all the biades are moved away from the piece allowing the piece to drop out of the apparatus.

Other objects and advantages of the present invention will be apparent from the following detailed description when considered in conjunction with the accompanying drawing, wherein:

FIG. 1 is a perspective view of a finished terminal block assembly with a plurality of elongated terminals driven into a base, each terminal having a bent end portion and forming part of a bank projecting in one direction or another;

FIG. 1A is a perspective view of a typical terminal that is seated and bent by the apparatus of the invention;

FIG. 2 is a side elevational view, partially cut away, showing the apparatus of the invention prior to driving of elongated terminals into the base; I

FIG. 3 is an enlarged side elevational view similar to FIG. 2 showing a part of the apparatus with the elongated terminals driven into the base and the bending of the end portions of projecting parts about to occur;

FIG. 4 is a side view similar to FIGS. 2 and 3 showing the relationship of sets of bending elements during the bending operation;

FIG. 5 is a side view similar to FIGS. 2-4 showing bending and backing blades retracted and a finished piece free to fall into a suitable receptacle;

FIG. 6 is a side view of a mechanism for releasing a catch mechanism;

FIG. 7 is an end view of the catch mechanism which provides for relative movement between sets of bending blades and backing blades;

FIG. 8 is a top view of the bending and backing blades of the apparatus;

FIG. 9 is an enlargement of the central portion of FIG. 8;

FIG. 10 is a cross sectional view looking down through a positioning assembly used with the apparatus;

FIG. 11 is a cross sectional view looking down through an associated bending blade and backing blade;

FIG. 12 is a perspective view of a bending blade projection bending an end portion of a terminal about a back- 0 ing blade anvil lug;

bly for imparting upward movement of a bending blade relative to a backing blade;

FIG. 14 is a side view of a typical bending blade having three projections facing the observer; and

FIG. 15 is a side view of a typical backing blade having three anvil lugs extending toward the observer.

Referring first to FIG. 1, there is shown in inverted position a terminal block assembly 10, consisting of a base member 11 with preformed holes 12 and 12' into which are inserted a plurality of U-shaped elongated terminal members 13 between edges 14 and 15 of the base. Interconnecting each pair of holes 12 is a seating slot 16. The various slots 16 may extend in any desired direction, for example, inwardly toward the center of the base 11 and away from the edge 14, as shown in FIG. 1, or outwardly toward either edge 14 or 15, or perpendicularly to the edges 14 and 15. Different slots 16 may extend in various directions. Each of the elongated members 13 has an end portion 17 bent slightly greater than a right angle toward the nearest one of edges 14 and 15. A typical U-shaped terminal member 13, shown in FIG. 1A prior to the formation of the bend at end portion 17, has also a locking end 18 and bottom or anchoring portion 19. Each locking end 18 is inserted in a hole 12' and each anchoring portion 19 is seated in a slot 16. The anchoring portions 19 f the various elongated members 13, therefore, are disposed in appropriate orientations in alignment with the various slots 16 to seat there- FIGS. 2-5 show an apparatus for manufacturing a terminal block assembly generally similar to the type shown in FIG. 1. The apparatus includes a positioning assembly 21, located between a driving assembly 22 and a bending assembly 23.

Positioning assembly 21 performs the twin functions of locating each U-shaped elongated member 13 in line with its desired position in base 11 prior to its being driven into and through the base and of guiding the elongated member during the driving. As shown in FIG. 2, each elongated member 13 is to be disposed in the positioning assembly 21 with the anchoring portion 19 of the member 13 aligned with the associated slot 16 in the base 11. The end portion 17 of each U-shaped member 13 is situated nearest to base 11 and anchoring portion 19 is most distant therefrom in the positioning assembly. The assembly 21 consists of a positioning member 24 having a plurality of elongated member-positioning apertures 25 (see FIG. Apertures correspond in number and orientation to the number and orientation desired for terminals in the base 11 of a finished terminal block assembly 10. The terminal receiving holes 12 are located at the desired terminal positions. These holes 12, as well as holes 12', may be of lesser size than that of a cross section of the elongated terminal members 13, which members will then broach their way in. In each aperture 25 there are preferably located one or more spring fingers 26 for holding the elongated terminal members 13 and for preventing buckling of the elongated terminal members as they are driven into base 12 by the driving assembly 22.

Driving assembly 22 carries a driving element mounting block 27 in which there are mounted a plurality of driving elements 28. Each driving element is located in line with one of the positioning apertures 25. By moving the driving assembly in a downward direction as shown in FIGS. 2 and 3, driving elements 28 may be brought into contact with the ends 18 of elongated terminal members 13. By thereafter continuing the downward movement of driving elements 28 into apertures 25, each elongated member 13 may be driven into base 11 with its end 17 projecting therethrough and its anchoring portion 19 seated in suitable slots 16 formed in the base so as to secure each member 13 in place (see FIG. 3). During driving, the base 11 is supported in a nest (see FIGS. 2, 5 and 15) in the bending assembly 4. 23. Any known mechanism, such as a hydraulic ram (not shown) may be used to move the driving assembly 22.

Bending assembly 23 consists of two sets of bending blades 29 and 29' in end-to-end relation for bending the end portions 17 of terminals 13 and two sets of backing blades 31 and 31 in end-to-end relation against which the end portions 17 are bent (see also FIGS. 9, 11, 12, 14 and 15). Spaces 31 between the blades provide locations into which the end portions 17 of terminals 13 can fit. Bending blades 29 and 29 are carried on movable bending blade supporting block 32 and 33. More particularly, T-shaped ends of the bending blades 29 and 29 fit into T-shaped slots 60 and 6%). Suitable clearance is provided between the bending blades and the T-shaped slots to permit vertical movement of bending blades. These supporting blocks 32 and 33 are connected to block-pulling piston rods and 40 for drawing them apart longitudinally by a pair of hydraulic or pneumatic piston and cylinder assemblies. Pins 34 pass through and interconnect the bending blades 29 and 29. Backing blades 31 and 31 have elongated slots 38 and 38' for receiving the pins 34 (see also FIG. 13). Backing blades 31 and 31 are attached on their bottom surfaces to a pair of support slides 36 and 37 mounted on bed way 45. The forward ends of the backing blades 31 and 31' are notched to form the nest 35, as best shown in FIG. 5. The slots 38 and 38 permit clearance for bending blade interconnecting pins 34, so that bending blade supporting blocks 32 and 33 may be moved relative to backing blade supporting slides 36 and 37 to provide relative movement between bending blades 29 and backing blades 31. Transverse projections 39 on bending blades 29 perform the bending. A single bending blade 29 or 29' has on it one or more projections 39. FIGURE 9 shows a bending blade 29A with a single projection 39A and a bending blade 29B with two projections 39B and 39C. Three projections 39 are schematically illustrated on each bending blade in FIGS. 25 thus permitting the simultaneous bending of three terminal members 13 to bend the ends 17 into three different tiers. In the FIGS. 2-5 (see also FIGS. 11 and 12), each backing blade 31 or 31 has three anvil lugs laterally projecting to cooperate with associated bending projections 39.

Located within the slots 38 and 38' on backing blades 31 and 31' and secured to the backing blades 31 and 31' are a plurality of aligned camming surfaces 41 best shown in FIGS. 5 and 13. These camming surfaces are positioned to engage bending blade interconnecting pins 34 after a desired amount of relative longitudinal movement between blades 29 or 29' and 31 or 31' has occurred. Further relative longitudinal movement between the bending blades and the backing blades will result in transverse and upward relative movement between the sets of blades caused caused by the pins acting as cam followers and riding up on camming surfaces 41 and carrying bending blades 29 with them to impart more than a bend to the end portions 17 of the terminal members 13. Thus, as shown in FIG. 12, the depicted projection 39 will move first to the right, and then both upwardly and to the right, following the lower surface of the depicted anvil lug 50 while spaced therefrom to bend the end portion 17 of the elongated members about the anvil lug to an angle greater than a right angle. The cam surfaces 41 and the bottom surfaces of the anvil lugs 50 on the backing blades 31 are shaped to cooperate with the bending blade projections 39 to produce such bends without pinching or shearing off the end portions 17. The movement of the projections 39 to bend the end portions 17 across the anvil lugs 59 will ordinarily set the bend of the material suificiently so that a bend of greater than ninety degrees will be retained after subsequent withdrawal of the anvil lugs 59 horizontally to the right in FIG. 12. At the time the anvil lugs start to move, all bending blade projections have moved past the ends of the bent portions 17. The anvil lugs 50 merely ride along and deflect the bent end portions 17, without rebending, because the anvil lugs 50 do not deflect the bent portions against any cooperating bending blade projections. Additionally, during a latter portion of the outward movement of the anvil lugs 50, the nest portion 35 on the backing blade,31 will be clear of the base 11. Thus, the base is free to fall and tends to be ejected downwardly by further outward movement of the anvil lugs. The same, of course, is true with respect to the operation of the blades 29' and 31.

End surfaces 42 and 42' of slots 38 and 38' are located so that the longitudinal movement of bending blades 29 and 29' will cause pins 34 to contact these surfaces at the time at which it is desired to cease relative movement between the sets of blades 29 or 29' and 31 or 31. Further longitudinal movement of bending blades 29 and 29' will then cause pins 34 to move backing blades 31 and 31' longitudinally along with the bending blades through the force exerted by the pins at end surfaces 42 and 42'. The use of a pair of catch mechanisms, such as mechanisms 43 shown in FIGS. 2 and 5-7, prevents any longitudinal movement of movable supporting slides 36 and 37 carrying backing blades 31 and 31' until the desired bending has taken place.

Catch mechanisms 43 fix the backing blade supporting slides 36 and 37 against longitudinal movement through the blocking action of pairs of locking fingers 44 in pairs of slots 46, appropriately located in a stationary base member 47. So long as locking fingers 44 remain in the slots, such longitudinal motions of slides 36 and 37 are prevented. The locking fingers are mounted on pivots 48 and are biased to a locking position in slots 46 by associated coil springs 49. Each of the bending blade supporting blocks 32 and 33 has a projecting portion 51, as shown in FIG. 6, which has on it a pair of camming surfaces 52. Surfaces 52 are positioned to contact fingers 44 (see FIG. 7) when bending blade supporting members 32 and 33 have moved an appropriate distance outwardly, and to pivot the locking fingers about pivots 48 against the biased force of springs 49. Thus, locking fingers 44 are freed from slots 46 and backing blade supporting slides 36 and 37 may move outwardly with bending blade supporting blocks 32 and 33 so that all blades 29, 29, 31 and 31 may be drawn completely away from a finished terminal assembly 10.

In use of the apparatus, positioning assembly 21 is removed and a base 11 of a terminal block assembly is properly positioned in the nest 35 on the movable backing blades 31 and 31'. Then the positioning assembly is replaced, and then the elongated terminal members 13 are loaded in the positioning apertures 25. Elements 11 and 13 may be so positioned manually or by any known feeding means (not shown). This condition of the apparatus is shown in FIG. 2.

Driving assembly 22 is then actuated, for example by supplying hydraulic pressure to the cylinder of a hydraulic ram 55 connected to mounting block 27. Driving elements 28 are thus caused to engage the elongated terminal members 13 within positioning apertures 25. Each elongated member is driven by one of the driving elements into its appropriate position in base 11 with its end portion 17 projecting out of a far side 53 of the base. The anchoring portion 19 and the locking end 18 of each elongated terminal member 13 seat respectively in a slot 16 and a hole 12 at the near side 54 of the base. This retains each member 13 in its hole 12 in the base. This condition of the apparatus is shown in FIG. 3. Note that each elongated member 13 has been driven into a position in which its end portion 17 projects between a bend ing blade projection 39 and an anvil lug 50 on a backing blade 31. It will be observed that each bending projection 39 is spaced a greater distance from its associated edge 14 or 15 than the back up anvils 50. For example, in FIG. 3, the projecting end 17 of the leftmost elongated member has the adjacent anvil lug 50 located outwardly thereof toward the left edge 15 of the base 11,

while the adjacent projection 39 is located inwardly of the projecting end 17. Also, note the locations of the spaces shown in FIG. 9. Elongated members 13 are now in position for their end portions 17 to be bent outwardly toward edges 14 and 15 of base member 11 by movement of bending blades 29 outwardly across backing blades 31 and movement of bending blades 29 in the opposite direction across backing blades 31' (compare FIG. 4).

While the movable backing blade supporting slides 36 and 37 are held against longitudinal movement by the locking fingers 44 in slots 46, each of the bending blade supporting blocks 32 and 33 is moved outwardly by the piston rods 40 and 40 of a pair of pneumatic or hydraulic piston and cylinder assemblies. This movement of the bending blade supporting members causes the bending blades 29 and 29 to move across and relative to the now stationary backing blades 31 and 31', thereby bending projecting end portions 17 of the elongated members 13 about the backing anvil lugs 50.

The outward longitudinal movement of the bending blades 29 and 29' is continued, with backing blades 31 and 31 still held stationary by catch mechanisms 43. Bending blade interconnecting pins 34, traveling in the openings 38 and 38 in the backing blades, come into contact with the camming surfaces 41 and act as cam followers, riding up on these surfaces and carrying bending blades 29 and 29 along with them (see FIG. 13). A component of motion transverse to the longitudinal direction is thus added to the continued longitudinal movement of bending blades 29 and 29'. The component is directed upwardly with projections 39 moving generally around the anvil lugs 50 on backing blades 31 and 31, as viewed in FIG. 4. This figure shows the condition of the apparatus just after pins 34 have ridden up on camming surfaces 41. Note that end portions 17 of elongated members 13 are bent about backing blades 31 and 31' to an angle greater than a right angle.

Next, the continuing outward movement of bending blade supporting blocks 32 and 33 causes camming surfaces 52 to pivot locking fingers 44 out of engagement with slots 46. Thus, the movable backing blade supporting slides 36 and 37 are released to move outwardly with bending blade supporting blocks 32 and 33 when pins 34 come into contact with the end surfaces 42 and 42 of openings 38 and 38 and exert an outward force on the backing blades 31 and 31'. All of the bending blades 29 and 29' and the backing blades 31 and 31' are thus drawn completely away from the finished terminal assembly 11 by continued outward movement of supporting members 32, 33, 36 and 37. The nest is thereby opened and removed from the terminal base 11. The finished terminal block assembly 10 is thus free to drop into a suitable receptacle (not shown) under the influence of gravity. FIG. 5 shows this condition of the apparatus.

Supporting members 32, 33, 36 and 37 may then be returned toward their initial positions by reversing the piston rod mechanisms 40 and 40' and/or through the use of return springs 56 (FIG. 8). The return springs 56 may be connected at their inward ends to stationary frame rods 57 and at their outward ends to rods 58 carried by the bending blade supporting blocks 32 and 33. During this returning movement, locking fingers 44 of catch mechanisms 43 will fall back into slots 46 in stationary base member 47 as camming surfaces 52 are withdrawn. Also during the returning movement, blade interconnecting pins 34 will move away from end surfaces 42 and 42' of openings 38 and 38' and off of camming surfaces 41 and the returning movement of bending blade supporting blocks 32 and 33 continues until these members attain their initial positions. At the same time, driving assembly 22 is returned to its initial position, by depressurizing its hydraulic ram assembly 55. The apparatus is now in position for receiving a new base 11 and new elongated terminal members 13 to be inserted in their appropriate positions, as in FiG. 2, and for another similar terminal block assembly 10 to be fabricated by repeating the operation.

It is to be understood that the particular embodiment of the apparatus described above is intended to be simply illustrative of the apparatus of the invention. Many modifications are possible without departing from the invention.

What is claimed is:

1. In an apparatus ing through a base:

an anvil means for engaging said terminal pin;

a bending member slidably mounted relative to said anvil means and positioned to engage and bend said terminal about said anvil means;

means for sliding said bending member relative to and past said anvil means in a first direction for initially bending said terminal about said anvil means; and

means rendered effective upon said bending means sliding past said anvil means for imparting a movement transverse to said first direction to further bend said terminal about said anvil means.

2. An apparatus for bending a terminal pin extending through a base as defined in claim 1 wherein said means for impartin transverse movement comprises:

a cam follower member mounted on said bending means to slide therewith; and

a cam, mounted fixed with respect to said anvil means,

and having a surface thereon projecting in a direction transverse to said first direction and aligned with said sliding cam follower to move said sliding cam follower in said transverse direction.

3. An apparatus for bending a terminal pin extending through a base as defined in claim 2 which comprises:

a first blade mounted to slide in said first direction and carrying said bending member and said cam follower;

a second blade mounted parallel to said first blade to slide in said first direction and carrying said anvil means, said cam, the bending member and the cam follower projecting from said first blade in a direction toward said second blade and the anvil means projecting from said second blade in a direction toward said first blade, said second blade having a notch to support said base;

means for holding said second blade stationary while sid first blade is slid in said first direction and moved by said cam surface in said transverse direction, said bending member bending and further bending said terminal about said anvil means;

means effective upon completion of said transverse movement for releasing said holding means; and

means, effective after release of said holding means, for sliding said second blade with said sliding first blade in said first direction to withdraw both said bending member and said anvil means from said terminal and said notch from said base to drop said base from the second blade.

4. In an apparatus for bending a pair of terminals projecting from a base member:

a pair of bending blades slidably mounted in end-toend relation;

a pair of back-up blades mounted adjacent said bending blades and slidably mounted in end-to-end relation;

each of said back-up blades having a notch formed in the end adjacent its associated back-up blade to form a nest to receive and support said base member with terminal ends projecting between a bending blade and a backing blade;

a bending projection extending from each bending blade on one side of said terminal;

an anvil lug extending from each back-up blade on the other side of said terminal;

means for selectively latching said back-up blades against movement;

for bending a terminal pin extend til means for moving said bending blades away from each other to move said bending projections to bend the terminals about said anvil lugs;

means rendered effective after said bending projections clear the ends of said bent terminals for releasing said latching means; and

means rendered effective after said latching means is released for moving said back-up blades with said bending blades in an outward direction to withdraw the notched end of said back-up blades from said base member.

5. Apparatus for bending a pair of terminals projecting from a base member as set forth in claim 4 which comprises:

means, effective when said bending projections have moved across said anvil lugs and prior to the movement of both the bending blades and the back-up blades away from said base member in said outward direction, for moving said bending projections toward said anvil lugs in a direction perpendicular to said outward direction to bend said terminals about said anvil lugs at an angle greater than a right angle.

6. Apparatus for bending a pair of terminals projecting from a base member so that the bent terminals lie in a single plane and are bent at points unequally spaced from the base member, which comprises:

a bending blade;

a backing blade parallel to said bending blade;

a pair of anvil lugs projecting from said backing blade toward said bending blade and spaced in accordance with the spacing of said bending points;

a pair of bending projections projecting from said bending projection spaced from an associated anvil lug allowing clearance for a terminal to fit therebetween;

means for locating one of said pair of terminals between each bending projection and its associated anvil lug with said bending points arjacent said anvil lugs; and

means for moving said bending blade relative to said backing blade to bend said terminals in said plane about said anvil lugs.

7. Apparatus for driving an elongated member through a base and bending an end portion of a projecting part of the elongated member which comprises:

a first movable support;

bending means mounted on said first movable support;

a second movable support;

backing means mounted on said second support and spaced from said bending means;

means for supporting said base on said second movable support;

positioning means for holding said elongated member with said end portion aligned with the space between said bending means and said backing means;

means for driving said elongated member from said positioning means and through said base so that the end portion of said elongated member projects through said base into the space between said bending means and said backing means;

first means for moving said first support to move said bending means in a first direction relative to said backing means to bend said end portion about said backin g means;

second means, effective after said bending means has moved past said backing means, for moving said bending means transverse to first direction to further bend said end portion about said backing means to an angle greater than a right angle; and

means for holding said second support stationary whiie said first support is moved in said first direction and said transverse direction.

8. Apparatus for driving an elongated member through a base and bending an end portion of a projecting part of 9 10 the elongated member as set forth in claim 7 which com- References Cited Fuses UNITED STATES PATENTS means, effective after movement of said first support 1n said transverse direction, for releasing said second 111691339 1/1916 Maynard 227155 suportholding means; and 5 2,334,393 5/1958 0111131; et al. 72-362 means, effective upon release of said holding means, for 3,004,292 10/1961 cubblflge et aL 227*155 X moving said second support in said first direction 3,020,936 2/1962 Bracc1 14071 3,195,581 7/1965 Brosseit 14071 with said first support to withdraw said bending means, said backing means and said base supporting v means from said bent elongated member and said 10 WILLIAM DYER Primary Exammer' base to allow said base to drop. GRANVILLE Y. CUSTER, JR., Examiner.

UNITED STATES PATENT OFFICE CERTIFICATE OF CORRECTION Patent No. 3, 383,021 May 14, 1968 Albert E. Boyer It is certified that error appears in the above identified patent and that said Letters Patent are hereby corrected as shown below:

Column 4 line 53,

Column 1, line 28, "porton" should read portion cancel "caused". Column 7, line 46, "sid" should read said Column 8, line 33, after "said bending" insert blade toward said backing blade, each bending line 38, "arjacent" should read adjacent Column 9, line 5, "suport" should read support Signed and sealed this 17th day of March 1970.

(SEAL) Attest:

WILLIAM E. SCHUYLER, JR.

Edward M. Fletcher, Jr.

Commissioner of Patents Attesting Officer 

